Arch-mold for concrete construction.



S. R. PIICKY.`

ARCH MOLD FOR CUNCRETE CUNSTRUCHON.

APPLicATloN man DEC. ls, wle.

1,293,838. lntentvd Fel. H, lJlJ,

/`\ 2 SHEETS -sHLil 24 UNITED STATES PATENT oEEIcE.

p s'llwl. MGKAY, 0F CLEVELAND. OHIO, ASBIGNQB T HSKAY QONCRETE FORH- COH- Pm, F SEWABEN, NEW JERSEY, A GOBPGRATION 0F NEW JERSEY.

I State of ABH-U0I|U FOR CGNCBETE CONSTRUCTION.

Speculation of Letters Patent.

Patented Feb. 11, 1919.

Application lllc lkcember 15,1918. Serial No. 137,089.

To all whom t may concern.'

Be it known that I, STEWART R. MCKAY, a citizen of the United States, residing at Cleveland in the county of Cuyahoga and hio, have invented a certain new and useful Improvement in Arch-Molds for Concrete Construction, of which the following* is a full. clear, and exact description.

This invention relates to forms employed for the purpose of molding ceilings, floors, or arches., While the embodiment herein disclosed is designed with particular reference to the production of a llat arch or floor construction and to the productionnf a concrete molding,` for a' structural beam, it is not intended thereby to confine the invention within such limited field, as the structurai features may well be capable of more extended applnmtion. The subjectmatter of this application constitutes a Icontinuation in palt of my application No. 872,648, tiled Nov. 17, 1914,

Among the general objects of my inven i tion is the provision of a form having greet flexibility, whereby it may be em loyed, with a minimum of alterations an additions, for the erection of arches varying in shape and dimensions and one which en ablcs structural beams to be=conveniently incased and protected. ,Further and more limited objects of the invention will appear hereinafter and will be `realized in and throu h the combinations of elements embodief in ,the claims hereto annexed and illustrated in the drawings forming part hereof, wherein- Figure 1 is a sectional view taken through a wall, ceiling, and structural beam of a building and having my invention applied thereto;

Fig'. i2, a perspective view, with parte in section, of the ceding or arch portion of my form;

Fig. 3, a sectional detail through one of the arch posts and the adjacent plates;

Fig. 4, a sectional detail *hrovigh one of the arch plates and the upper portions ot the the beam 2*.

Fig. 6, a similar view of the hangers employed in Fig. 5;

Fig. 7, a detail in perspective, with parts broken away, of a clamping device and the parts associated therewith; and

Fig. 8, a plan view of the same, with parts broken away.

In the aforesaid views, I have shown a portion of the molding;v form employed for the production of the side wall 1 as well as a special form for the production of the ceiling or fiat arch 2 and for the molding of the Lbeam 2*. The ceiling or arch mold comprises generally a series of units each comprising a pair of arched osts with mold plates secured thereto an therebetween, each post comprisin a pair of adjustably connected sections. tiere being a, bridgin plate extending betweenpairs of posts'an overlapping the ends of spaced mold plates. The vertical branches of the posts at one end: of the arch formare shown-.as supported uliylon the upper ends of the wall posts 3, w ile the opposite branches are shown as supported upon a platform suspended fromA It will be obvious, however, that both ends of the arch or ceiling posts may be supported in the same manner, as by wall posts, by platforms supported from structural beams, or in any other convenient manner, the particular arrangement shown illustrating the flexibility and adaptability of lthe form.

Supported between the posts 3 are the mold plates, whi-h are shown ascom rising each a suitable wareber of boards 3 aving a sheet metal fai e platel 3", applied thereto,

tas described in my application No, 872,480.

Each arch or ceiling post comprises a pair therefrom. and :1 tciescopic connection be tween suf-h angniar branches. In Fig. 1 one of the post sections is indicated at 7, 7', the branch 7 extending horizontally from the verticui branch 7*; opposed to this section is the section Si, 8a. The posts areof 'hollow construction, each section comprisingL a channel having a web 7", 8", respectively, side. lianges Tc, 8*", respectively, and hori-A zontal. anges 7, 8, respectively, to which 'slots 11 in the web thereof which are adapted to receive the Shanks of headed bolts 10. A plate 12, of the same width as the plates 7", 8e, is secured to the channel member 9 kas by means of a U-shaped strap 13 which 1li4 may be riveted to the 'plate and to the upwardly projecting flanges of thesaid member. The plate 12 overlaps the plates 7", 8", and provides with the channel member an adjustable connection between the post seetions whereby the length of the arch or ceiling posts may be varied in accordance with the requirements of the particular installation. f v

Extending between adjacent arch or ceilin posts are: the mold plates 14, the term p ate being here employed in its broad sense and not for the purposevof limiting the construction of the lates or panels. Each of these plates is pre 'erably constructed in the same manner as the mold plates 3, 3", and is shown as comprising a foundation of wooden boards having at opposite lateral ends thereof the tongues 14, the work facing sides of the boards and the tongues being covered with sheet lmetal, as indicated at 14". The tongues 14'* are adapted to engagethe lianges 7", 8, and the thickness of the mold plates is such that the work facing sides 14 thereof will ho in the same piane as the plates 7e and 8. The mold plates may be secured to the posts in any convenient manner, the securing means shown herein heingithe same as in my application 872,648, filed November 17, 1914. The adjacent ends of mold plates on opposite, sides oi' each post are shown as secured thereto by means, of a U-shaped yokey 16 I which is adapted to straddle the post and with its legs bearing against the tongues 14a-see Figs. 7 and 8. Each of the posts is shown as provided with a double keyhole slot comprising a central opening 17 with narrow slots 1818a extending in opposite directions therefrom. Extendin through the double key-hole slots is a bo t 19 which may he conveniently formed from two straps of metal fastened together, each bolt having a foot Q0 which is of such size that it can not passA through the central opening 17, whereby the bolt can not be withdrawn from the post, although it-may be conveniently inserted therein before securing the plates 7 or 8" thereto. Intermediate of its ends the bolt is provided with oppositely extending wings 21 which are the tongues 143 wit adapted to pass through the openingll' but can not pass through the slots 18 or 18.

The outerend of the bolt projects through a slot i the clamping member 16 and' is provided with a slot 21", adapted to receive a Wedge key 22. The parts are so proportioned that, when the wings 2l are in engagement with the inner face of the web 7" on opposite sides of the slots 18 or 18, the legs of the clampin yoke 16 may engage a slot 21 extending beyond the outer surface of the yoke. Then,I by driving the Wedge key home, legs will hold the tongues 14 firmly against the flanges 7d or 8". When the clamping members are not in use, the bolt 19 may be moved outwardly through the opening 17 until the foot 20 engages the inner face of the fiange 7b or 8". The bolt' and clamping member may then be rotated at rightangles to the position shown in Figs. 7 and 8, and the clamping member may be secured to the post with its legs bearing against the tion, the same hing covered by my appl-ica- A suitable number ofl non No., 872,648. these clamping devices will be, employed, those for the side-wall forms being indicated at 5, those for the cei lng or arch mold the yoke forms being indicated at 23, while still others are shown at 24, the lastmentioned clamping members being shown as applied to the post sections 7, 7 and 8 8, and serving to clamp both the side wall mold plates and the ceiling or arch mold plates to their resl'pective post sections.

ixtending between the plates 12 of adjaeent'posts and between the spaced ends of mold plates is a bridge plate 25. This plate is of such width as to abut against and form a continuation of the plates 12 and is of such length as to overlap the mold plates. To secure the plate in place, pivote/d latches 26 are provided. at Iopposite ends thereof. Each of these latc'hes is adapted to be swung at right-angles to the position shown in Fig. 2, and, when the plate is positioned, thereafter tovbe moved to the position shown in said ligure, whereby a portion of each latch will take beneath a plate 12, thereby to lock the plate 25 in plac.- The plates 25, even when. used with Hat arch or ceiling construction, are preferably formed so as normally to be transversely bowed, or arched, as shown in Fig. 4. 'hen secured in place by the latches 26, the plates 'will press rmly upon the tops of the moldplates 14, thereby preventing the wet concrete from oozing between the said plate and the mold plates. In erecting a ceiling or arch a gap .will frequently be left between mold plates. The

'pair ofY lugs 31, t

brid plates 25 can be conveniently applied to an cover this gap in such manner as to prevent the `leakage 4of the wet concrete.

A s heretofore indicated, if the arch or ceiling to be formed ext/ends between two paral el walls, the vertical branch 7* or 8* of each post, section will coperate with a vertical, ost 3, such as shown at the left of Fig. 1. owever, it is frequently necessary iii constructing an arch or ceilin to incase an I-Ibeam or other 4structural m. In `the-drawing, I have therefore shown a ceiling form construction adapted to coperate both with a wall mold and with a mold construction permitting the incasingof beam, the lower end of the post section branches 8* being sup orted on a platform suspended from such eam.

In this connection, I employ. pairs of hangers 28, said hangers bein employed with each arch or ceiling post. ach hanger preferably comprises a head 29 having inwardly extendinglears 30 which :are tapered, for reasons whic will be ex lained hereinafter. Dependingl from each, head 29 is a e lugs of each pair being provided--with alined opening 32. In the drawin thestructural mem r 2 is shown 'as an IJ earn and the hangers are designed Vto coperate with o positesides of the bottom flange of such earn, the ears 30 resting upon such Aflange with the body 'of each hanger depending below the beam. Beneath the beam and extending' lon itudinally thereof is a plate or board 34-whic isadapted to form a bottom support for the concrete within which the beam is to be incased. This plate or board 34 is supported in thenotchedportions 33 of each pair of hangers.

Extending between the `lugs 31 of each ypair of hangers and transversely of the beam 2 is a platform 35. This platform is shown am inverted channel member and is sup orted from the lugs by means of pins 36 which extend through a propriete openings 32 in the hangers an through correspending openings in the flanges of the platform member 35. The provision of the openings 32 secures a range ofadjustability sufficient to meet the requirements of varying installations.

The bottom of each post section 8, 8 is shown as seated upon the platform member 35, said member alsobeing shown as forming a scat for a similar post section upon the opposite side of the I-beam. The bottoms of the p'ost 'sections 8, 8* are secured in place by means of blocks 38 preferably of wood) each bea-ring at one ge against the bottom of an opposite section, and being braced thei'eagainst by means of an angles plate 38`x and a wedge-key 39 driven through an opcninl in the base of said plate and an opening 'i the web of the platform 35.

The spleces between the board or plate eceilingl will be nclosed by mold plates 3*, 3", simi arto the like designated mold plates' at the left of Fig. 1, the said mold plates being secured to the post seotions 8l inthe manner hereinbefore de scribed. v y Reference has been made to the tapering of the ears 30. After the concrete'has set and the forms have been removed, the head Egtions of the hangers will be partially emded in lthe lconcrete. 4Because ofthe :tapering of *the ears, they hangers may easily withdrawn and the openings, duelo such withdrawal, may be filled with groiit orconcrete.

From theforegoing description, it will'lbe seen that I have produced' an arch formwhich possesses a considerable ran f of ad- ;nstment and one which permits t e forms to be easily removed when the concrete shall have set. The removal of the mold plates iseccted by loosening the clamps 5, 23, 24, and turnin them to their right an led position. bots 10, the post sections may be moved toward each other, easily talken down. The removal of the hangers 28 has been described and thememovalof the platforms will be evident.

,Having 4described my' invention, claim 1. In a form :fr molding ceilin or arches, the combination of a pair o sections, each of said sections having branches `Whieh extend substantially at right angles with respect to each other, corresponding branches of saidV sections being presented toward each other and in substantial alinement with each other; an interposed post .section adjiistably connected to the 'opposite ends of` the said branches;` and a plate associated with the said interposedpost section and cooperating with the adjacent vportions of the sai branches.

2. 'In a form for molding ceilings or arches, the combination of a pair 0f alined post sections; a channel-shaped mem'berengaging with oppositely disposed portions of said sections; means for securing said channel member aljiistably withV respect to said sections; and a pl'atc connected with the said channel memberand associated with ad- -jacent portions of the said post sections.

3. In a arches. rthe combination of post sections, each of the post sections being composed of branches which extend at nn angle to each other, corresponding branches of said sections being presented toward in substantial alinement with an interposed hen, by removing the s form for molding ceilings orA each ,other and enabling `them to be i lidi i post section adjustably connectedto the op- Y posed branches o fthe first mentioned seeisoV l the opposed branches of each said post. sections upon the branches and at the corners thereof.

VIn a form for molding ceilings or arches, the eombii'iation of a pair of angular post sections, means, for supporting: said angular sections with the corresponding branches of saidsections presented toward and in substantial alinement with euch otherzan interposed post seetion adjustably connected to the opposed ends of said branches` and supported by snob intermediate section.

5. In a forni formolding ceiling :1nd arch constructions, the combination ol two pairs of angular post sections, means for support ing,r the angular sectionsl of each pair in such'mannerthat one of the branches of each section will be presented toward and in substantial alinement with the oorrespond4 ing branch of the other section, mold plates adapted to be inserted between and conneet/ed to the sulistantially parallel branches, and an intermediate post section connected to and extending across the .space between the opposed ends of the post sections and having a plate which is alla tedto overlap the lateral edges of the lilrst mentioned plates. V

6. In a form for nioldir'lg ceiling and arch constructions, the combination of a pair oflaterally spaced postsearfh comprising a pair of longitudinal v spaced members, mold plates adapted to be inserted lgietween and' connected `to the laterally spaced' members, and a pair of intermediate post sections eonnected to and extending across-,the space between the opposed ends of the post members and havingr a )late which 'is adapted to overlap the latera edges of the first men'- tioned plates. 1

7. In a form for molding ceiling and arch constrnrtions. the combination of `two vpairs of angular post sor'tions, `means for. supporting: the angular sections of each pair in auch manner that one oi' the branches of each seetion will be presented toward and in sub lstantial alinement with the corresponding branch of the other section, mold plates adapted to be inserted between and con?" nected to the said branches; an intermediate connecting the pa1r olf angular and a plate conneKfted 'to'eaeh post seotion telescopically post sections. of such intermediate post sections adapted to overlap, the, opposed edges of the first mcntionedrplates. t

8. In a form `ofi' the character described, the combination of a pair of alined post sections. each sertion comprising a pair of angular-ly disposed branches, and an interposed post section adjustabbY connected with proximate branches of the first mentioned post sections.

9. In a form of the character described, the combination, with a pair of alined chana plate assmiated `with and and ably connected to the proximate branches of eaeh of said sections pair of alined' chan- Y the rst mentioned sections, and a plate opi p osed tothe intermediate `also adjustably connecting the. proximate branches of the frstmentioned post sections.

ln a form of the character described, the combination of a pair of alined channeled post sections, each of said sections having:r angularly disposed branchegan interposed channeled post section telescopioally fitted to the sections, sait interposed post'section having a plurality of .slots therein, and bolts adapted to extend through said slots, therebyto ituljustably connet .the int" osed post seetions with said proximate briches.

1 n a form of the character described, the con'ibination, with a air of falined channeled post sections each gnlarly disposed branches, of an 11i-termediate channeled posi;v section adjnstabl connected to the proximate branches ofy said post sections, of the intermediate post section and connected thereto and forming with such channeled section a ltelescoping connection -fol' the o posed ends of the proximate branches of t e first mentioned post sections.

13. In a form of the character described` tlm "omliination, with a pair of parallel posts and mold boards interposed between and secured to said posts, of a plate extending between said posts and overlapping.;V`

said mold plates, and means for dctachably securing the said plate tothe said posts.

- In a form of the character described., the combination, with a pair of parallel posts Aand a pair of spaced mold plates opposed therebetween and secured thereto, of a plate extending between said -posts and overlapping said moldplates, and means for detachably securing the said plate to the said osts. f p .15. In a form ofthe character described, the combination, with a pair of parallel posts and 4a pair of spaced mold terposed therebetween and secure thereto, of a plate adapted to extend between said posts and to oerlap said mold plates, and swinging catches carried by op vosito ends of said plates and adapted to e brought intoand ont of engagement withtheir respective posts.

16. The combination, with a pair of oppositely` disposed hangers adapted to engage post section and )roximate branches of said post and a plate opposedto the web (plates in- `nected to and depend from a beam, of a bottom mold board supported by the flange of a structural beam, of means upomsaid hangers for supporting a pla-te beneath such beam, a platform supported by said hangers, a mold form ost one end whereof 4is supported by sald platform meansfor supporting the other end of sai post, and mod plates supported by said post. f

17. In a form of the character described, the combination of a post, mold plates supported by said post, means for supporting one end of said post, ay hanger, said hanger being provided with depending portions, a platform for supporting the other end of said post and means for adjustably securing the platform between the depending por tions of the hanger.

18. The combmation, with two pairs of hangers adapted to be mounted on the flange of a sti actural beam and to depend therefrom, Cue pair of hangers being laterally spaced trom thc other, of a mold'plate supported by said hangers beneath such beam, a transverse platform supported by each pair of hangers, vertically extending posts having their lower ends supported by each of said platforms, means supported by each platform for forcing the posts against the hangers cooperating therewith, mold plates adapted to be inserted between said posts, and means for clamping said plates to said posts.

19. The combination, with two pairs of hangers adapted to be mounted upon and depend from the [lange of a structural beam, one pair being laterally spaced from the other, of a, mold plate supported by said hangers beneath said beam, vertically extending posts supported from said hangers, mold plates adapted to be inserted between said posts, and rheansfor securing the plates to thei oste. i"

20. he combination, with a pairv of opposed lchannel-shaped hangers having their flanges presented toward each other and provided with slots for enabling them to be applied to the flange of a structural beam, of a mold plate supported in said slots beneath said beam.

21. The combination, with a pair of latL orally spaced hangers adapted to be constructural said hangers beneath said beam, posts supported by said hangers. and mold plates z nterposed between and connected to said posts.

2Q. In a form for molding ceilings and arch constructions, the combinationot two pairs of post sections, the sections 1n each pair being spaced apart and 1n alinement with cach other; interposed post sections adjustably connected `to the said alined sections; mold plates adapted to be inserted bctween and to engage the said pairs of post sections; and means for holdingthe said plates to the said post sections.

23. In a `form for molding ceiling and arch constructions, the combination of two pairs ofspaced post sections, the sections of each pair being 1n substantial alinement and spaced apart; an interposed post section adjustably connected with the opposed portions of each pair of post sections; a plate associated with each interposed post section and bearing upon adjacent portions of the coperating post sections; spaced mold plates adapted to be inserted between the said pairs of post sections; means for securing t 1e said mold lates to the post sections; and a plate extendin between the pairs of post sections, said plate bearing upon the s aced mold plates and coperating with tie plates associated with the intermediate post sections.

24. In a form for molding ceiling and arch constructions, the combination of two pairs of spaced post sections, the sections of each pair being 1n substantial alinement and spaced apart; an interposed post section adjustably connected with the opposed portions of each pair of post sections; a plate associated with each interposed post section and bearing upon adjacent portions of the eoperating ost sections; spaced mold plates adapte to4 be inserted between the said pairs of post sections; means 'for se curing the said plates to the post sections; a normally curved plate extending between the said pairs of post sections and at its edges bearingrupon the spaced mold latesand securing means associated with t e said plate for holding thesame in straightened position.

25. The combination, with a pair of laterally spaced hangers adapted to be connected to the flange of an I-beam, each air comprisin in turn a pair ot' opposed c anneled brac cts havingI their flanges recessed to receive the I-beam flange and to suspend the brackets thereby, the bracket flanges being recessed as far as the webs of said channels beneath the Nicam, a bottom plate supported by said hangers in the space thus formed below the Lbeam, and means coperating with said hangers for supporting mold plates on opposite sides of the I-beam and of the bottom plate whereby a mold. may be formed about the depending flange of the I-beam.

In testimony whereof, I hereunto aiix my signature.

STEW'ART R. MCKAY. 

